Improvement in the manufacture of music-box cylinders



A. vFRANKF EL D.

Manufacture nf Music-Box Cylinders.

i "Nn 144,084.

Patented Oct. 28,1873.v

UNITED STATES PATENT OFFICE.

ARNOLD FRANKFELD, OF NEW YORK, N. Y.

IMPROVEMENT IN THE MANUFACTURE OF MUSIC-BOX CYLINDERS.

Specification forming part of Letters Patent No. 144,084, dated October 28,1873; application filed October 11, 1873.

To all whom it may concern:

Be it known that I, ARNOLD FEANKEELD, of the city and State of New York, now residing in Geneva, Switzerland, have invented an Improvement in the lllanut'acture of Music-BOX Cylinders, of which the following is a specication:

rIhe cylinders of music-boxes are nowmarked off by hand at the places where holes are to be bored to receive the steel pins which represent the notes in the piece of music to be played by the instrument. rllhis operation of marking the cylinder is very tedious, requires great skill and care on the part of the workman, and said workman must have a thorough knowledge of music; besides, if several cylinders to play the same music are required, each cylinder requires to be marked oit' by hand.

My improvement consists in a pattern-cylin der upon which the notation is made as usual, and the holes bored at the places indicated; but said cylinder is made suiiiciently large to receive within it the cylinder for the musicboX, and the two cylinders are clamped or secured firmly together. The holes are now made in the musiebox cylinder by simply inserting the lyoringtool successively in the various holes in the pattern-cylinder, which holes become a guide for the tool `as the holes are bored in the music-box cylinder. By this device any nu1nber of cylinders for playing the same tune can be made; they will all be exactly alike, and their cost will be materially lessened, because skilled labor will not be required in their production after the pattern-cylinder is made, and one cylinder can be made to contain the pins for several times with much less trouble than. heretofore.

In the drawing, Figure l is a sectional elevation of the pattern and music cylinders connected together, and Fig. 2 is a cross-section of the same.

a represents the patternfcylinder, made of hardened metal, and of a size to receive within it the cylinder b for the music-box.` The cyl inder a is marked o by hand and holes h made therein at the various places required, the same as though an ordinary music-cylinder was being made. The music-cylinder is now placed within the pattern-cylinder, and the two rmly connected together. I have shown them as secured by a screw, at c. The two cylinders may be mounted upon a shaft,

so that they can be revolved to bring the holes in the pattern-cylinder, one after another, opposite a boring-tool, d; and, if so placed, the parts are to be presented to the boring-tool in any suitable stock or slide-rest, so that the tool enters the hole in the pattern-cylinder and bores one in the music-cylinder, and so on until all the holes are made in the music-cylinder, at places indicated by the holes in the patterncylinder. The cylinder might be heldin the hand Iand moved up to the boring-tool. I provide a pin and slot at c, so that, in ease the two cylinders are separated previous to all the holes in the music-cylinder being made, said cylinder can be returned to place and properly positioned by this pin and slot, and the balance ct the holes bored at the proper place.

Instead of boring the holes in the musiccylinder, as aforesaid, the surface of the cylinder may be marked by an instrument inserted within the holes of the pattern-cylinder, and then the two cylinders separated an d the musiccylinder bored at the places indicated.

I claim as my intention- A pattern-cylinder receiving within it thel ARNOLD FRANKFELD.

lVitnesses F. BEGEE, L. DU OOMMUND. 

